Acid production
First Claim
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1. A process for producing hydroxyacetic acid which comprises contacting carbon monoxide with formaldehyde and a catalyst comprising hydrogen fluoride in a reaction zone and under reaction conditions effective to form hydroxyacetic acid, including a temperature between 0°
- and 100°
C. and a carbon monoxide partial pressure between 10 and 4000 psig.
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Abstract
A process for producing hydroxyacetic acid which comprises contacting carbon monoxide with formaldehyde and a catalyst comprising hydrogen fluoride in a reaction zone at a temperature between 0° and 100° C and a pressure between 10 and 4000 psig. Oxydiacetic acid is also produced by this reaction. The ratio of hydroxyacetic acid to oxydiacetic acid is increased by adding water to the reaction mixture.
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Citations
7 Claims
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1. A process for producing hydroxyacetic acid which comprises contacting carbon monoxide with formaldehyde and a catalyst comprising hydrogen fluoride in a reaction zone and under reaction conditions effective to form hydroxyacetic acid, including a temperature between 0°
- and 100°
C. and a carbon monoxide partial pressure between 10 and 4000 psig. - View Dependent Claims (2, 4)
- and 100°
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3. A process in accordance with claim l wherein the temperature is between 20°
- and 60°
C. and the carbon monoxide partial pressure between 10 and 3,000 psig.
- and 60°
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5. A process for producing hydroxyacetic acid and oxydiacetic acid which comprises contacting carbon monoxide with formaldehyde and a catalyst comprising hydrogen fluoride in a reaction zone and under reaction conditions effective to form hydroxyacetic acid, including a temperature between 0°
- and 100°
C. and a carbon monoxide partial pressure between 10 and 4000 psig.
- and 100°
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6. A process for producing oxydiacetic acid which comprises contacting carbon monoxide with formaldehyde and a catalyst comprising hydrogen fluoride and under reaction conditions effective to form oxydiacetic acid, including substantially anhydrous reaction conditions and a temperature between 0°
- and 100°
C. and a carbon monoxide partial pressure between 10 and 4000 psig.
- and 100°
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7. A process for producing hydroxyacetic acid which comprises contacting carbon monoxide with formaldehyde and a catalyst comprising HF and HBF4 in a reaction zone and under conditions effective to form hydroxyacetic acid, including a temperature between 0°
- and 100°
C and a carbon monoxide partial pressure between 10 and 4000 psig.
- and 100°
Specification